Disk recording medium and reproduction method and apparatus thereof

ABSTRACT

A disk recording medium includes a lead-in area, a program area and a lead-out area. The program area includes: a first track on which a plurality of data signals each of which has a different index from the others is loaded; a second track on which a plurality of programs is loaded, whereby the plurality of programs consists of the sequential combination of the indices of at least one data signal among the plurality of data signals and each program has a different index from the others; a third track on which a data index table comprising the indices of the respective data signals and initial address information is loaded; and a fourth track on which a program index table comprising the indices of the respective programs and initial address information is loaded. The lead-in area is loaded with a table of contents comprising the initial address information and a plurality of pointers each of which is different from the others and designates the respective tracks of the program area and the initial position of the lead-out area. Thus, larger programs can be contained on a single disk and can be accessed without an operating program or an application program.

TECHNICAL FIELD

The present invention relates to a disk recording medium and areproduction method and apparatus therefor, and, more particularly, to acompact disk (CD) system.

BACKGROUND ART

The CD is a recording medium in which an optically modulated largecapacity digital data signal (at maximum 800 Mb) can be stored in a diskhaving a diameter of about 12 cm. Such CDs include: an audioexclusive-use CDDA which stores digital audio data; a compact diskgraphics (CDG) or compact disk enhancement graphics (CDEG) medium forproviding lyrics and graphic background pictures as well as audio bystoring digital audio data, character data and graphic data therein; aCDV for storing digital audio data together with video data therein; aCD-ROM which can be used as a data base, electronic publication, etc.,by storing various data and computer program data therein; and a compactdisk interactive (CDI) system for use in multi-media systems by storingaudio, video, character and computer program data therein. The physicalrecording formats of such CDs are based on the recording format of theCDDA. The data recording areas of the CD are largely classified into alead-in area (LIA), a program area (PMA) and a lead-out area (LOA). Inthe CDDA, the digital audio data signal is recorded in the PMA, and thenprogram running time and contents information (i.e., a "table ofcontents") is recorded in the LIA. Thus, the CD reproducer reads therecorded table of contents from the LIA prior to reproduction, and seeksa selected program to reproduce the corresponding program. The LIAconsists of eight sub-code channels P, Q, R, S, T, U, V and W. The"table of contents" information utilizes the Q-channel and includes theprogram number and running time of a maximum of ninety-nine programs.The CDG utilizes R through W sub-code channels which are not used in theCDDA and includes a graphic function for visually displaying lyrics andimages corresponding to the songs of a karaoke apparatus. Since such aCDDA or CDG searches the programs of the PMA with reference to the tableof contents of the LIA, the number of programs which can be stored inthe PMA is limited. For example, since one CD has a maximum capacity of800 Mb, 8,000 still images each having a size of 100 Kb can be recordedthereon. However, table-of-contents information corresponding to 8,000still images cannot be completely stored in the existing LIA region.

The CD-ROM and CDI reformulate an audio data block comprising 98 frames,which is a data processing unit, into that of a sector unit, in order torecord or process the reformulated audio data block (refer to U.S. Pat.No. 4,893,193). A CD-ROM driver is connected to a host computer (apersonal computer) and performs a dependent reproduction operation by aCD-ROM operating program which is loaded onto a hard disk or floppy diskof the host computer. Thus, since the CD-ROM should use a particularhost computer, compatibility between systems is essential. Accordingly,home distribution of CD-ROM systems is limited. To satisfy thecompatibility requirements, a CDI system integrally includes in the CDIreproduction apparatus, the additional elements of a computer, acharacter reproduction circuit, an audio reproduction circuit and acomputer data reproduction circuit. That is, the CDI system is areproduction exclusive-use computer in which the hard disk or floppydisk of the computer is replaced by the CDI disk. Such a CDI system canaccess substantial amounts of data only by an application programcontained on the disk, which, in terms of its operating system, is verysimilar to an ordinary personal computer. Accordingly, since the CDIsystem requires a particular operating system (OS), for example, aCD-RTOS (OS-9/68,000), and application program, the cost is increaseddue to specific software needs. The computer cannot directly access thedata location recorded on the disk, and accordingly, the computer mustaccess the data location via the OS or application program, which istroublesome.

On the other hand, a music video accompaniment apparatus (called a"karaoke" apparatus) displays song lyrics on a monitor while reproducinga musical accompaniment corresponding to the song, whereby users cansing along with the accompaniment by reading the displayed lyrics.Recently, such music video accompaniment apparatuses have been widelydistributed, having been placed in music room establishments and in thehome as well. Thus far, a laser disk (LD) karaoke apparatus using alaser disk, a computer karaoke apparatus using a semiconductor memory,and a CDG or CDEG karaoke apparatus using the graphics capability of acompact disk have been introduced.

Using a laser disk player, the LD karaoke apparatus reproduces a videosignal, an audio signal and a character signal which have been recordedon the LD and displays the reproduced signals on the screen of a videodisplay unit. Here, the audio signal is output through an audio unit.Accordingly, the merits of the LD karaoke apparatus include ahigh-quality picture and sound, and provisions for a background picturebefitting the mood of the song, and lyrics which can be displayed as amotion picture.

However, as the LD (having a diameter of 30 cm) contains massive amountsof motion picture data together with the audio, the disk size is largerthan that of the CD (whose diameter is 12 cm), and the number ofprograms which one laser disk can contain is limited to about 30video-accompanied songs of average length. Thus, to furnish programs for2,000 songs requires almost 70 laser disks, and since the price of oneLD is still costly, purchasing such disks is burdensome. Also, since thedisk is frequently changed according to music selection, a music roomestablishment should keep an attendant on duty or install an LD changingapparatus which is expensive. Also, due to the immensity of such an LDchanging apparatus, considerable installation space is occupied.Moreover, the search speed is slow.

The CDG karaoke apparatus is an apparatus for simultaneously generatingthe video picture, lyrics and music by reproducing a CDG disk containingstill images and character data in the graphic sub-coding channel of theCD. Such apparatuses have recently become popular for home use becauseCDs are smaller and cheaper than LDs. However, the picture quality ofthe CDG system is worse than that for LD usage with respect to therepresentation of a motion picture. Furthermore, since one disk for theconventional CDG system can contains only about 15 songs, a large numberof such disks (approximately double) are required to match thecapability of an LD system, which also increases the need for theabove-mentioned disk-changing apparatus.

The computer karaoke apparatus utilizes a semiconductor memory deviceand stores song accompaniment data and lyrics data therein in the formof musical instrument digital interface (MIDI) data. Then, correspondingMIDI data is read out according to a song selection, and character datais displayed on a screen of the video display unit. Here, the songaccompaniment data is output via an audio processor.

Such a computer karaoke apparatus records the song accompaniment data asMIDI data, differently from the recording method of the audio samplingdata of the disk karaoke apparatus. Accordingly, various programs can berecorded, numbering approximately 1,000-1,500 songs. The computerkaraoke apparatus can perform high-speed search operations according tothe CPU's direct selection of a song, without changing the disk.However, displayed images corresponding to the song cannot be provided,as in the case of the disk karaoke apparatus. Also, sound quality islower and, when increasing the number of songs for selection, memorycapacity should be expanded, which further increases consumer expense.Also, the memory is incompatible with other media, such that programscannot be easily moved between respective forms of data storage,differently from the medium having a shape of a disk.

As described above, the conventional music video accompanimentapparatuses all have drawbacks as well as merits, and their prices arestill high. Accordingly, homes use of these apparatuses has not beengreatly expanded.

DISCLOSURE OF THE INVENTION

Therefore, to solve the above problems, it is an object of the presentinvention to provide a disk recording medium having a new CD recordingformat capable of recording massive programs thereon.

It is another object of the present invention to provide a diskreproduction method and apparatus thereof in which program data isdirectly accessed and reproduced from a disk medium.

It is still another object of the present invention to provide a diskrecording medium for exclusive-use with video song accompaniment,capable of containing song accompaniment data, lyrics and backgroundpictures for thousands of songs on a single compact disk.

It is yet another object of the present invention to provide areproduction method and apparatus thereof for a disk recording mediumfor exclusive-use with video song accompaniment, in which a search speedis fast without requiring a disk change.

It is a further object of the present invention to provide a video songaccompaniment apparatus which is inexpensive, small and lightweight.

It is a still further object of the present invention to provide a videosong accompaniment apparatus compatible with other storage media.

To accomplish the above objects of the present invention, there isprovided a disk recording medium comprising a lead-in area, a programarea and a lead-out area, wherein the program area comprises:

a first track on which a plurality of data signals each of which has adifferent index from the others is loaded;

a second track on which a plurality of programs is loaded, whereby theplurality of programs consists of the sequential combination of theindices of at least one data signal among the plurality of data signalsand each program has a different index from the others;

a third track on which a data index table comprising the indices of therespective data signals and initial address information is loaded; and

a fourth track on which a program index table comprising the indices ofthe respective programs and initial address information is loaded,

wherein the lead-in area is loaded with a table of contents comprisingthe initial address information and a plurality of pointers each ofwhich is different from the others and designates the respective tracksof the program area and the initial position of the lead-out area.

A reproduction method for a disk recording medium comprising a lead-inarea, a program area and a lead-out area according to the presentinvention, comprising the steps of:

reading a table of contents from the lead-in area of the disk to obtainfirst and second address information during initial reproduction;

reading a data index table and a program index table from a first trackand a second track of the program area according to the first and secondinitial address information, to store the read said data and saidprogram index tables in a first memory area and a second memory area,respectively;

reading a data index sequence signal of a corresponding program from athird track of the program area according to the index, and respectiveinitial address information of a selected program, to store the readdata index sequence signal in a third memory area;

sequentially obtaining the initial address information of the data indexfrom the data index table stored in the first memory area according tothe data index sequence signal stored in the third memory area; and

reading a corresponding data signal from a fourth track of the programarea according to the initial address information of the respective datasignals, to process, reproduce and output the read data signal.

In a disk reproduction apparatus for picking up and reproducing datasignals from a disk recording medium, a reproduction apparatus for adisk recording medium according to the present invention comprises:

compact disk (CD) reproduction means for decoding a picked-up signalwhile servo-controlling the tracking of a disk with respect to a pickupaccording to address information, for outputting the decoded CDreproduction signal, and for generating a program selection signalaccording to a key input;

decoding means for receiving, de-scrambling and error-correcting the CDreproduction signal and for outputting the decoded data;

memory means for storing a data index table, a program index table and adata index sequence signal in respective first, second and third memoryarea of the memory means, respectively;

control processor means for receiving the data output from the decodingmeans, supplying the data and program index table signals and the dataindex sequence signal to the first, second and third memory areas,outputting a reproduction data signal, and supplying initial addressinformation of the corresponding program and the data track to the CDreproduction means with reference to the data and the program indextable signals and the data index sequence signal according to theprogram selection signal of the CD reproduction means; and

signal converter means for receiving the reproduction data signal fromthe control processor means and converting the received reproductiondata signal into a predetermined signal to thereby generate areproduction output signal.

Also, to accomplish the above objects, there is provided a diskrecording medium for exclusive-use with video song accompanimentcomprising a lead-in area, a program area and a lead-out area, whereinthe program area comprises:

a first track for storing an image table on which index information fora plurality of video data constituting associated background picturesfor respective song accompaniment programs is loaded;

a second track for storing a music image table on which song indexinformation of each song accompaniment program is loaded;

a third track for storing video data on which the plurality of videodata having video index information each of which is different from theothers is loaded; and

a fourth track for storing music data on which the song accompanimentprograms each having MIDI data, lyrics data and sequence data of thevideo data corresponding to respective songs for accompaniment, andhaving respective song index information, is loaded,

wherein the lead-in area is loaded with a table of contents comprisinginitial address information and a plurality of pointers each of which isdifferent from the others and designates respective tracks of theprogram area and the initial position of the lead-out area.

A reproduction method for a disk recording medium for exclusive-use withvideo song accompaniment comprising a lead-in area, a program area and alead-out area according to the present invention, comprises the stepsof:

during initial reproduction, reading a table of contents from thelead-in area of the disk recording medium to obtain first and secondaddress information;

reading an image table and a music table from a first track and a secondtrack of the program area according to the first and second initialaddress information, to store the read the image and the music tables ina first memory area and a second memory area, respectively;

obtaining address information of the selected song accompaniment programwith reference to the music table of the second memory area according toselection of a song accompaniment program, and reading correspondingsong accompaniment program data from a fourth track of the diskrecording medium according to the obtained address information to storethe read data in a third memory area; and

sequentially reading corresponding video data from a third track of thedisk recording medium with reference to a video data sequence tableamong the song accompaniment program data stored in the third memoryarea, restoring the MIDI data read from the third memory area into anaudio signal to output the restored audio signal, and simultaneouslymixing the read video data with the lyrics data read from the thirdmemory area to display the mixed data as a video signal on a display.

A reproduction apparatus for use in a video song accompaniment apparatusfor displaying song lyrics and background pictures on a screen, togetherwith song accompaniment, comprises:

input means for generating a key signal for selecting a song;

CD reproduction means for reproducing a CD signal from a disk recordingmedium for exclusive-use of a music video accompaniment according to akey input of the input means;

decoding means receiving the CD signal for generating a decoded signal;

memory means for storing a song accompaniment program table, a videodata table for background pictures and song accompaniment program dataamong the decoded signals therein, respectively;

video processing means for receiving song lyrics and background picturedata and developing a video signal;

audio processing means for receiving the MIDI data for use with songaccompaniment and generating a mixed analog audio signal; and

a control processor for receiving the decoded signal for and storing thereceived decoded signal in the memory means, for supplying an addresssignal of a corresponding song program to the CD reproduction meansaccording to a song selection with reference to the song program table,for supplying respective data address signals to the CD reproductionmeans with reference to the video data table according to the video datasequence table of corresponding song program data, for supplying videodata reproduced and decoded from the disk recording medium in responseto the video data address signal to the video processing means, and forforming the song program data according a MIDI data format so as topermit the MIDI data to be supplied to the audio processing means.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a data structure of a Q sub-code channel in a compact disk.

FIG. 2 shows a table of contents of a Q sub-code channel according toone embodiment of the present invention.

FIG. 3 conceptually illustrates a track structure of a program area in acompact disk according to the present invention.

FIG. 4 shows an example of a data index table of FIG. 3.

FIG. 5 shows an example of a program index table of FIG. 3.

FIG. 6 is a flowchart diagram of a disk reproduction method according toone embodiment of the present invention.

FIG. 7 is a high level block diagram of a disk reproduction apparatusaccording to the present invention.

FIG. 8 shows an example of a table of contents for a Q sub-code channelaccording to another embodiment the present invention.

FIG. 9 illustrates an alternative embodiment of the track structure of aprogram area in a compact disk according to the present invention.

FIG. 10 shows an example of the image or music table of FIG. 9.

FIG. 11 shows the image data of FIG. 9.

FIG. 12 illustrates a sector structure corresponding to MODE 2 FORM 2.

FIG. 13 illustrates a note-on/off message structure for musicalinstrument digital interface (MIDI) data.

FIG. 14 shows an example of a data structure of a song program accordingto the present invention.

FIG. 15 shows another example of a data structure of a song programaccording to the present invention.

FIG. 16 shows an exclusive message for timing synchronization ofaccompaniment data, character data and video data.

FIGS. 17 and 18 illustrate sector structures corresponding to FORM 1 ofMODE 1 and MODE 2.

FIG. 19 is a high level block diagram of a video song accompanimentapparatus according to the present invention.

FIGS. 20 and 21 are flowcharts for explaining operations of a video songaccompaniment apparatus according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT

Hereinafter, the present invention will be described in more detail withreference to the attached drawings.

The disk recording medium of the present invention comprises mainly alead-in area (LIA), a program area (PMA) and a lead-out area (LOA), asdo conventional CDDA disks. FIG. 1 shows the Q-channel data structurefor the LIA. Among the eight channels of P, Q, R, S, T, U, V and W data,each of which has 98 frames, the Q-channel data structure having 98second-channel bits is composed of 96 bits plus two synchronizationbits. Here, four control bits and four address bits are followed by 72data bits which are composed of an eight-bit track number code (TNR), aneight-bit pointer, a 24-bit address (minute, second and frame),eight-bit interval bits (zero) and a 24-bit pointer address (PMIN, PSECand PFRAME). The data bits are followed by a sixteen-bit cyclicredundancy check (CRC) code. In the LIA, the TNR of the Q-channel is thedecimal number "00." The LIA contains the content information for arecorded disk, i.e., a table of contents (TOC). The TOC is comprised ofthe Q-channel, pointer and a pointer address indicating minutes,seconds, and the frame value of the starting point for each program ofthe PMA which has a predetermined number of tracks.

FIG. 2 shows an embodiment of the TOC according to the presentinvention. When the value of the pointer is "01," the minute data (PMIN)indicates the starting address of the data index table track. When thepointer value is "02," the PMIN data indicates the starting address ofthe program index table track. When the pointer value is "03," the PMINdata indicates the starting address of the data signal track. When thepointer value is "04," the PMIN data indicates the starting address ofthe program track. When the pointer value is "05," the PMIN dataindicates the starting address of the warning track. When the pointervalue is "A0," the PMIN data indicates the starting address of the firsttrack of the program area, and when the pointer value is "A1," the PMINdata indicates the starting address of the last track of the program.When the pointer values are "A0" or "A1," the data of PSEC and PFRAMEindicate the method of data signal coding for the data signal track, andwhen the pointer value becomes "A2," the PMIN data indicates thestarting address of the LOA. Accordingly, the TOC structure of thepresent invention is composed differently from that of the conventionalCD-type TOC structure.

Referring to FIG. 3, the program area (PMA) of an embodiment accordingto the present invention comprises largely a data index table track, aprogram index table track, a data signal track, a program track and awarning message track. The starting position of each track is indicatedby the TOC pointers, as described earlier. On the data signal track,predetermined data signals D1 through Dn are recorded having basic unitsconstituting a program. For example, if the data signal is an n-pagestill image data signal, the signal is classified into the page units,and the still image data signal for each page has a predetermined indexand starting-address information. One page of still image data comes to384×240 bytes for a delta YUV (DYUV) coding method, so that if the datais composed of a MODE2 FORM2 sector, the amount of data corresponds toabout 40 sectors. In the case of an RGB555 coding method, the number ofbytes is 384×240×2 (184,320 bytes), so that the data being of the MODE2FORM2 sector corresponds to about 79 sectors. Accordingly, the unit sizeof each data track varies according to the kind of data, coding method,and constituting modes. Here, the data signal is composed of not onlythe still image data but also sound source data, font data, etc.;combinations thereof are also possible. The TOC signal of a data signalis recorded on the data index table track which collects the indices andthe starting-address information of the aforementioned data signal. FIG.4 shows an embodiment of a data index table wherein, when the data indexis "0001," the minute, second and frame data indicate the absoluteelapsed time from the starting point of the PMA to the starting point ofdata signal D1, in terms of an initial address. A plurality of programsare recorded on the program track and are composed of index sequencecombinations of at least one or more data signals. Programs PM1 throughPMm are constituted by the index data of each data signal constitutingthe programs. For example, if one program is composed of a three-pagestill image data signal, the program can be indicated by sequentiallyrecording the index information of the still images in a sequence inwhich these still images constitute the program. The TOC signal of theprograms are recorded on the program index table track which collectstherein the index and the initial address information of theaforementioned programs. FIG. 5 shows an embodiment of the program indextable. When the program index is "0001," the minute, second and framedata indicate the absolute elapsed time from the PMA starting point tothe starting point of program PM1, in terms of an initial address. Onthe warning message track, in order to transfer a warning message whenthe disk recording medium according to the present invention isreproduced by the conventional CDDA reproducing apparatus, a message maybe recorded; for example: "This disk is a Samsung CDK disk which needs aSamsung CDK player for reproduction." The data recorded on the disk ofthe present invention can be recorded conforming to MODE0, MODE1 andMODE2 formats for CD-ROMs, and to MODE1 & MODE2 FORM1 and MODE2 FORM2formats for CDIs.

As described above, the disk recording medium of the present inventiondoes not record the whole data signal constituting the program, butrecords on the separate track the basic data signal componentsconstituting all programs and constructs each program with the indicesconforming to the sequence combination of these data signal components,so that the overlapped data can be removed and thus more data can becontained in one disk. Therefore, the program and data tables can berecorded on the PMA, allowing many more program TOCs to be recorded.

Relating to FIG. 6, a method for reproducing the data from the diskrecording medium according to the present invention will be explained.

Firstly, at the beginning of reproduction, the TOC is read out from theLIA (step 100), and then the disk is checked to ascertain whether it isa CDK disk of the present invention (step 101), with the correspondingdisk-reproduction processing being performed if it is not. For CDK disks(step 101 ), the initial address value of the data index table track andthe initial address value of the program index table are obtained fromthe TOC, and the data index table is read out from the PMA (step 103).Thereafter, the program index table is read out (step 104). If a userselects a desired program (steps 105 and 106), the index of the selectedprogram is searched by referring to the program index table, so as toobtain the initial address value of the corresponding program index.According to the obtained initial address value of the program, thecorresponding program is read out from the PMA (step 108). Next,according to the data index sequence loaded in the read-outcorresponding program, the initial address value of the data signal issearched from the data index table, and according to the initial addressvalue of the obtained data signal the corresponding data signal issequentially read out from the data signal track of the PMA (step 109).The read-out data signal is converted and processed into a predeterminedoutput signal, so as to be reproduced and output (step 110). Step 110 isrepeated until the last data signal of the corresponding program isreproduced and output. When the reproduced output of the last datasignal is finished, the flow goes back to step 105, and waits until thenext program is selected (step 111).

According to the reproducing method of the present invention asabove-described, it can be known where the data signal of the programwill be located on the disk, so that the next data signal is read out inadvance and is standing by while the current data signal is beingoutput. Thus, the reproduction signal can be output and reproduced fromthe disk at a very high speed, and the microcomputer or microprocessorcan detect the data position by reviewing the table, which does not needan additional OS for exclusive-use or application programs.

Referring to FIG. 7, the reproduction apparatus for reproducing a diskrecording medium according to the present invention is constructed so asto be compatible with conventional CD disks. The disk reproductionapparatus according to the present invention largely comprises CDreproduction means 200, decoding means 600, a control processor 300, abuffer memory 400 and signal conversion means 500. CD reproduction means200 picks up the optically modulated data signal from disk 10 via pickupmeans 210, decodes the picked-up data by digital signal processor means231, outputs the decoded CD data signal, and thus produces the programselection signal from a microcomputer 233 according to the key inputthrough key input means 240. The CD reproduction means is constitutedthe same as conventional CD reproduction players. Servo means 232performs tracking-servo with respect to a spindle motor 220 and pickupmeans 210. Decoding means 600 receives the CD reproduction signal, andperforms descrambling and a predetermined error detection operation aswell as error correction with respect to the obtained signal, so as tooutput the data. Decoding means 600 is for decoding the data signalhaving the data recording format according to the present invention fromthe CD reproduction signal. Control processor 300 recovers the data andprogram index table signals from the input data, transfers the initialaddress information of the data and program tracks to microcomputer 233by responding with the program selection signal sent from microcomputer233, and outputs the data signal of the selected program track. Memorymeans 400 stores the data index table signal, the program index tablesignal, and the data index sequence signal of the selected program, intoa first, second and third memory areas, respectively. Signal conversionmeans 500 converts the data signal which is read out according to thedata index sequence signal into the predetermined reproduction outputsignal for sending the data signal to the output device, and outputs theconvened data signal. Signal converting means 500 can comprise one ormore reproducing means including video reproducing means, audioreproducing means, and font reproducing means, according to the type ofdata.

As described above, when the reproducing apparatus of the presentinvention reproduces a CDK disk, CD reproduction means 200 firstly readsout the TOC from the LIA of disk 10 to get the predetermined addressinformation, and thus sequentially reads the data index table track andprogram index table track according to the obtained address informationso as to provide decoding means 600 with the CD reproduction signal.Decoding means 600 receives and de-scrambles the CD reproduction signal,performs error detection and error-corrections, and finally outputs thedecoded data to control processor 300. Control processor 300 obtains thedata index table signal and the program index table signal, andallocates these to the first and second areas of memory means 400. Whena user selects a predetermined program via key input means 240,microcomputer 233 displays this program on display means 250 andsupplies the program selection signal to control processor 300. Controlprocessor 300 receives the program selection signal, and obtains theinitial address information of the corresponding program by referring tothe program index table residing on the second area of memory means 400.The obtained address information is supplied to microcomputer 233 whichthereby seeks the corresponding program track according to the suppliedaddress information, so as to read out the program. The read-out programsignal is transferred to control processor 300 via digital signalprocessor 23 1 and decoding means 600, and control processor 300 storesthis signal in the third area of memory means 400 in terms of the dataindex sequence signal of the program. Thereafter, control processor 300refers to the data index table of the first memory area according to thedata index sequence signal stored in the third memory area, so as to getthe initial address of the data signal in a sequence to be transtarredto microcomputer 233. Microcomputer 233 controls pickup means 210 andservo means 232, and thus picks up the corresponding data signal fromthe data signal track and transfers the obtained data signal to controlprocessor 300 via digital signal processor means 231 and decoding means600. Control processor 300 processes the transferred data signal so asto be supplied to signal conversion means 500, and signal conversionmeans 500 converts the input signal into the reproduction output signalto be output.

As described above, the reproducing apparatus of the present inventioncan detect previously the position of data signal in the disk by themicrocomputer and the control processor, and thus can pick up the nextsignal and temporarily hold the picked-up signal while outputting thecurrent signal, which permits high-speed operation at an output accesstime. Additionally, the reproducing system does not need an additionaloperating system, which can lower the production cost and enable thereproduction of conventional CDDA disks.

As described above, the apparatus according to the present invention canstore more information on one disk, which can maximize the recordingefficiency of the disk. Also, the microcomputer (or microprocessor) doesnot need an additional operating system environment and for detectingthe data address of the disk directly. It enables a high-speed accessingand reduces production costs, which provides an economical product.

According to the present invention, the data signal is classified intothree subgroups: a still image group, a sound source group and a fontgroup. The program can be composed of the data signal's sequencecombination read from these three groups, so that variable programs cansatisfy any application field. That is, the present invention isapplicable to the recreational field (such as game programs, karaokeprograms and music programs), the educational field (interactiveeducation programs and animated video programs) and the electronicpublication field (electronic dictionaries, books, magazines andadvertising catalogues, tour guide programs and portableelectronic-mapping programs). In other words, the drawbacks ofconventional CD-ROMs and CDIs are compensated for, which can thus besupplied at a lower cost while enabling the storage of a wider varietyof information in a single disk.

Hereinafter, the present invention will be explained with reference to apreferred embodiment of the video music accompaniment system, which isapplicable to a karaoke system.

The disk recording medium for exclusive use for video musicaccompaniment according to the present invention comprises mainly alead-in area (LIA), a program area (PMA) and a lead-out area (LOA), asin the conventional CDDA system.

As described above, the LIA has Q-channel data as shown in FIG. 1.

Relating to FIG.8, the present invention, for searching thousands ofmusic accompaniment programs and screen structures, sets the respectivetable tracks on the PMA, and records the address information of thetracks onto the TOC. When the pointer value of the TOC is "01," PMINindicates the start address of the image table track. When the TOCpointer value is "02," PMIN indicates the start address of the musictable track, when "03," PMIN indicates the start address of the imagedata track, and when "04," PMIN indicates the start address of the musicdata track. When the TOC pointer value is "05," PMIN indicates the startaddress of the warning message track, when "A0," PMIN indicates thestart address of the first track which is played first in the programarea, when "A1," PMIN indicates the start address of the last trackwhich is played last in the program area, and when "A2," PMIN indicatesthe start address of LOA. When the TOC pointer value is "A0" or "A1,"PSEC and PFRAM E show a method of coding video data. For theaforementioned TOC of the present invention, unless the pointer value isA0, A1 or A2, the content sequence can be changed according to the trackallocation of the PMA. It is preferable to allocate the table tracksnear the LIA, for improved searching speed and servo operation of thereproducing apparatus.

Relating to FIG. 9, the PMA of the CDK disk according to the presentinvention is largely composed of five tracks.

The first track contains the table of FIG. 10 composed of an imagetable, screen number, and address information. Here, N is the number ofscreens, for example, 5,000 pages.

The second track contains a music table, i.e., the table of FIG. 10composed of the number of accompaniment music programs and the addressinformation. Here, N is the number of songs, for example, 2,000 songs.

That is, the image and music table tracks have a four-byte headeridentifier ("CDK"), first to fourth four-byte pointers No. 0 to No. 3,and a header having a reserved twelve bytes. In addition, a body has Nsets of four-byte table information, respectively indicating the initialaddress of the sequence and the PMIN, PSEC and PFRAME data. Below thebody, a four-byte tailer identifier "END-K" follows, which signifies theend of the table. Here, the first, second and third pointers Nos. 1, 2and 3 indicate the same value, and point to the starting address of thetailer identifier (ID).

On the third track, the image data, that is, the respective picture dataare recorded in the same format as that shown in FIG. 11. For a 360×240byte image size and the eight-bit color look-up table coding method, theimage data per one screen is 360×240 bytes, and the color look-up tabletherefor is 256×3 bytes. Therefore, the quantity of information can beexpressed in terms of the number of sections as ##EQU1## and thusresults in 43 sections. In other words, the image data per picture islocated continuously throughout 43 sectors.

On the fourth track, music data, for example, sound source data such asMIDI, the lyrics data and image sequence data, is recorded as shown inFIG. 14 and FIG.15.

A CD disk can contain about 800 Mb of information given the maximumreproduction time of 75 minutes. In an embodiment of the presentinvention, 2,000 or more music accompaniment programs and 5,000 or morestill images (one page each) are recorded on one CD disk. The quantityof information of a one-page still image is 92.16 Kb (384×240) in caseof the DYUV coding method. Accordingly, the quantity of informationoccupied by a 5,000-page still image becomes 460.8 Mb (5,000×92.16 Kb).The music accompaniment program uses up 50 Kb per song, and thusrequires 100 Mb of memory (2,000×50 Kb). The video data table occupies20 Kb (5,000×4 bytes) and the music table occupies 8 Kb (2,000×4 bytes).Thus, the overall information quantity of the first through fourthtracks is 8 Kb+20 Kb+100 Mb+460.8 Mb, for a total of 560.828 Mb.

The fifth track contains a warning message which is digitally sampledfor the conventional CD-type. (Here, for example, a voice message orCDG-type character message may inform the user thus: "This disk is aSamsung CDK disk which needs a Samsung CDK player for reproduction.") Inan embodiment of the present invention, the video data uses MODE2 FORM2sector structure of the CDI disk format shown in FIG. 12. Accordingly,since one screen of information is 92.16 Kb/2336 bytes (39.4), about 40sectors per screen are needed. There/ore, 75 sectors (or blocks) areread out, so that one screen can be read out in 0.53 seconds. Musicaccompaniment programs are composed of music instrument digitalinterface (MIDI) data. The MIDI signal has the format shown in thefollowing Table 1.

                  TABLE 1                                                         ______________________________________                                                                    Data                                                                Condition Byte                                                                          Byte                                              ______________________________________                                        channel                                                                              Note OFF         8X          2                                         message                                                                              Note ON          9X          2                                                Poly Phonic Key Pressure                                                                       AX          2                                                Control Change   BX          2                                                Program Pressure CX          1                                                Channel Pressure DX          1                                                Pitch Foil Change                                                                              EX          2                                         system Exclusive Change F0          Not fixed                                 message                                                                              Cutter Frame Change                                                                            F1          1                                                Song Position Pointer                                                                          F2          2                                                Song Selector    F3          1                                                Tune Request     F6          Nothing                                          End of Exclusive F7          Nothing                                          Timing Clock     F8          Nothing                                          Start            FA          Nothing                                          Continue         FB          Nothing                                          Stop             FC          Nothing                                          Active Sensing   FE          Nothing                                          System Request   FF          Nothing                                   ______________________________________                                    

MIDI signal is composed of one "state" byte and at least one data byte.The MIDI signal is largely grouped into channel message and systemmessage portions, according to the state byte. Meanwhile, the channelmessage is grouped into voice message and mode message sections and thesystem message is grouped into an exclusive message section, a commonmessage section and a real-time message section. The note on/off messageof FIG. 13 indicates the reproduced audio tone which is divided into 128tone levels, and the reproduced magnitude which is divided into 128levels of magnitude.

The music accompaniment data and lyrics data of the present inventioncan use the conventional computer karaoke-type MIDI format, and theimage sequence data constituting the background picture for each song isstored for the respective music programs by using the system exclusivemessage. Accordingly, the music accompaniment program can be composed asin FIGS. 14 and 15.

Firstly, referring to FIG. 14, a song program header contains theinformation about the header ID code, pointer 0, pointer 1, pointer 2,pointer 3 and the reserved bytes. The body is largely composed of asound source, i.e., music accompaniment data, lyrics data and imagesequence data, which is composed according to the MIDI format.Accordingly, pointer 0 of the header indicates the initial address ofthe body, pointer 1 indicates the initial address of the lyrics data,pointer 2 indicates the initial address of the image sequence data, andpointer 3 indicates the initial address of the tailer ID. Thesynchronization of music accompaniment data, lyrics data and imagesequence data can be accomplished using a MIDI time code which includesa header frame message, a full time code message, a user-bit message anda set-up message. Moreover, font and screen synchronizations can bematched by inserting control data into the music accompaniment data. Forexample, an exclusive message can be used as shown in FIG. 16, so that amanufacturer ID code and flag code can be loaded thereon.

Flag code 0X (hexadecimal) is a kind of data-byte, and among the fourlower bits of the flag code, the least significant bit is used for theeffective flag of music accompaniment data, the second bit is used forthe output flag of the lyrics data, and the third bit is used for theoutput flag of image sequence data.

Next, referring to FIG. 15, the song program header comprises theinformation about the body initial address pointer and the tailerpointer. The body has flag information of FIG. 16 for respective musicaccompaniment data, and is followed by the corresponding lyrics data andthe image sequence, i.e., the number of screens.

The image sequence data shows the sequence of the screens which arepreviously edited for being supplied at each predetermined time. Thescreens are compiled from 5,000 or more pages of video data into apredetermined number of screens. For example, if a three-minute musicaccompaniment program provides for different screens every two seconds,ninety pages of screens are necessary. Thus, to play 2,000 three-minutesongs, 180,000 (90×2,000) screens (or pages) are necessary, but becausea certain picture can be used for other musical data conforming to themeaning of the lyrical data, proper combinations of about 5,000 pages ofpicture screens (as a basic number) can produce about ninety screens.Also, the screens can be changed in time with each musical bar. The MIDIdata of the music accompaniment program track has the sector structureof MODE1 of FIG. 17 or MODE2 FORM1 of FIG. 18, which shows a highererror correction capability than the MODE2 FORM2 sector of the videodata. Accordingly, if each music accompaniment program is 50 Kb, it isspread through about 25 sectors, and if the video data program is 92 Kb,it is spread through about 40 sectors.

As aforementioned, the disk recording medium for the exclusive use ofvideo music accompaniment according to the present invention does notaccess the program directly by referring to TOC of the conventional CDdisk, but, first, accesses the table and then refers to the next table,so as to access each program, which enables the accessing of thousandsof programs. Moreover, the audio signal is recorded on the PMA, not viathe sampling method which requires an abundance of information, but byforming the audio signal into MIDI data, so that more song programs canbe recorded on one disk. Therefore, although sound quality is somewhatdegraded, the music accompaniment, lyrics and background screens can besupplied simultaneously.

The recording format of the aforementioned embodiment is for explainingthe present invention, and various modifications can be made to thepresent invention. For example, the video data can be encoded by notonly the DYUV coding method, but also via RGBnnn coding (where n is thenumber of bits per color signal), a color look-up table method, arun-length coding method or a data compression coding method. When thedata compression coding method is used, more video data can be storedand animated screen displays or moving pictures can be accomplished.

Referring to FIG. 19, the video music-accompaniment apparatus accordingto the present invention comprises CD reproduction means 100, decodingmeans 200, a control processor 300, memory means 400, video processingmeans 500, audio processing means 600 and input and display means 700.CD reproduction means 100 picks up the optically modulated data signalfrom disk 110 via pickup means 130, decodes the picked-up signal viadigital signal processor means 150, and outputs the decoded CD datasignal. Servo means 140 performs a tracking-servo operation with respectto a spindle motor 120 and pickup means 130. A microcomputer 160controls each section of CD reproducing means 100 according to the keyinput signal, so as to produce a display signal, and thereby operates asa sub-processor of control processor 300.

Decoding means 200 receives and de-scrambles the CD reproduction signal,and performs a predetermined error detection as well as errorcorrections with respect to the obtained signal, and thus outputs a CDKsignal. Control processor 300 receives the CDK signal, and stores it inmemory means 400, and thereby operates as a main processor ofmicrocomputer 160 of CD reproduction means 100; and further possessesMIDI signal processing capability for processing MIDI data among CDKsignals. Control processor 300 supplies the accompaniment data among theprocessed MIDI data to audio processing means 600 at a rate of 3.125 Kbper second in the format of a ten-bit MIDI signal per byte, and providesvideo processing means 500 with the video data and character data.Memory means 400 includes a first memory area 410 for storing theprogram table, a second memory area 420 for storing video data table,and a third memory area 430 for storing a song program data. Videoprocessing means 500 includes a video processor 510, a characterprocessor 520 and a mixer 530. Video processor 510 comprises at leastone field (or frame) memory means, and thereby forms a television signalfrom the input video data, so as to output the television signal to avideo display device, i.e., a CRT or monitor. Character processor 520outputs the character video signal according to the input font data.Mixer 530 mixes the television signal output from video processor 510with the character video signal, so as to output the mixed televisionsignal to a television receiver (not shown). Audio processing means 600comprises a sound source processor 610, a selector 620 and adigital-to-analog converter 630. For example, the audio source processor610 (i.e., a digital sound generator such as Yamaha's model YM-2163,YM-3812 or YMF-262) reproduces and outputs the accompaniment signalaccording to the applied MIDI signal. Selector 620 selectively outputsthe CD reproducing signal during CD disk reproduction throughdigital-to-analog converter 630 and the accompaniment signal from theaforementioned sound source processor 610, to a television's audiocircuitry or the like, while responding to the disk determiningoperation of CD reproducing means 100. Input and display means 700comprises input means 710 for producing a key signal according to thekey input (e.g., from a remote controller), and display means 720 fordisplaying the operation condition of the system.

The operation of the music video accompaniment apparatus (FIG. 19)according to the present invention will be explained with reference toFIGS. 20 and 21.

Once the device loads a disk, CD reproduction apparatus 100 reads outthe TOC from the LIA of disk 110 as shown in FIG. 20 (step 10). Byreferring to the TOC format, microcomputer 160 determines the type ofdisk loaded, and determines whether disk 110 is a CDK disk (step 12) andif not, the device performs processing of corresponding CD disks such asa CDDA disk, etc., (step 14). Here, if the system is additionallyequipped with a CDG decoder, CDI decoder etc., the corresponding CDGdisks or CDI disks can be processed. For example, in case of CDDA disks,control processor 300 produces an audio output selection signal (shownas a dashed signal path in FIG. 19), so that selector 620 outputs theCDDA audio signal. If the disk is a CDK disk at step 12, microcomputer160 searches the PMA program table track and video data table track byreferring to the TOC, reads the table signal via pickup means 130 anddigital signal processor 150, and outputs the read table signal (steps16 and 18). The input of a key signal via input means 710 is determined(step 20), and if a key input signal is present, it is decoded.Thereafter, unless a song is selected (step 22), the corresponding keyprocessing is executed (step 24), otherwise a song program selectionsignal is produced (step 26). If the address of the corresponding songprogram is input from control processor 300 while responding to themusic selection signal generation (step 28), microcomputer 160 controlsservo means 140, and moves pickup means 130 onto the program track, soas to search the corresponding song program. Then, the correspondingsong program is read to be output (step 30). When a video data addresssignal is input from control processor 300 (step 32), microcomputer 160searches the video data track of the disk and reads the correspondingvideo data, to thereby output the data (step 34). Steps 32 and 34 arerepeated until the completion of a corresponding music reproductionoperation (step 36), whereupon the flow is fed back to step 20.

Referring to FIG. 21, for a CDK disk, the CD signal supplied from CDreproduction means 100 is de-scrambled via decoding means 200,error-corrected, and input to control processor 300. Control processor300 receives the CDK signal, so as to store a music table in firstmemory area 410 of memory means 400 (step 50) and an image table insecond memory area 420 (step 52). When a program selection signal isprovided from microcomputer 160 (step 54), control processor 300produces the address signal of the corresponding song program byreferring to the music table stored in the first memory area (step 56).When the song data is input through decoding means 200 by responding tothe address signal, the data is stored in third memory area 430 ofmemory means 400 (step 58). Control processor 300 reads out the songdata from third memory area 430, deciphers the data using the MIDI dataformat, and controls CD reproduction means 100 and video and audioprocessing means 500 and 600 according to the deciphered results (step60). In the case of a font data output (step 62), the decoded font datais supplied to the character processor 520. Character processor 520produces a character video signal according to the input font data (step64). For outputting the image sequence data (step 66), the number ofcorresponding image data is read in reference with the image sequencedata in the third memory area, and outputs a video data address signalby checking the address of the image data number which is readpreviously by referring to the image table of second memory area 420(step 68). Control processor 300 receives the video data signal providedfrom CD reproducing means 100 via decoding means 200 by responding tothe video data address signal, and supplies the received video datasignal to video processor 510. Video processor 510 stores the inputvideo data in the second field memory and converts the video data storedin the second field memory into the analog television signal, so as tooutput the converted signal (step 0). The television signal andcharacter video signal produced at step 64 are mixed by mixer 530, andthe video signal is output to a television receiver (step 72). At steps62 and 66, the MIDI data (but not the font data and the video dataoutputs) is converted to a ten-bit MIDI signal, so as to be supplied tosound source processor 610 (step 74), and sound source processor 610receives the MIDI signal and outputs the combined analog audio signal tothe audio apparatus (step 76). Steps 60 through 76 are repeated untilmusic reproduction is finished at step 78. Upon completion of the musicreproduction, the flow is fed back to step 54.

As described above, according to the present invention, accompanimentfor 2,000 and more songs can be accomplished using one CDK disk. Thebackground screens can be constructed using 5,000 or more pages of videoscreen data in an edited sequence, conforming to the lyrical content ofthe respective songs, thereby enabling a compact and lightweightapparatus to be provided whose cost is significantly reduced. Theapparatus according to the present invention is very economical becauseit maintains compatibility with conventional compact disks. Also, it isunnecessary to change the disks as in the conventional CDG or laser diskplayer, so that high-speed searching operations are possible as in thecase of the computer karaoke apparatus. Thus, the apparatus of thepresent invention enables high quality background screen images to bedisplayed in accordance with the lyrics, which are not provided by theconventional computer karaoke apparatus or CDG karaoke apparatus.

The aforementioned embodiment of the present invention explains oneexample of the compact disk, but recordable and reproducible disks (suchas CD-ROMs and MOD disks) can also be used for the present invention. Inthis case, the user is enabled to not only directly insert new musicprograms, but also to determine the editing sequence of the backgroundscreen, while referring to the table indices of the video data, thusfacilitating more enjoyable video music accompaniment.

What is claimed is:
 1. A disk recording medium having a lead-in area, aprogram area and a lead-out area, wherein said program area comprises:afirst track on which a plurality of data signals each of which has adifferent index from other data signals is loaded; a second track onwhich a plurality of programs is loaded, said plurality of programsconsisting of the sequential combination of indices of at least one datasignal among the plurality of data signals from said first track, eachprogram on said second track having a different index from the others; athird track on which a data index table comprising the indices of therespective data signals from said first track and initial addressinformation is loaded; and a fourth track on which a program index tablecomprising the indices of the respective programs from said second trackand initial address information is loaded, wherein said lead-in area isloaded with a table of contents comprising the initial addressinformation and a plurality of pointers, each of which is different fromthe others and designates the respective tracks of the program area andthe initial position of the lead-out area.
 2. The disk recording mediumaccording to claim 1, wherein each said data signal is a still imagedata signal.
 3. The disk recording medium according to claim 1, whereineach said data signal is an audio data signal.
 4. The disk recordingmedium according to claim 1, wherein each said data signal is a fontdata signal.
 5. The disk recording medium according to claim 1, whereinsaid first track includes at least two data signal types selected fromthe group consisting of a still image data signal, an audio data signaland a font data signal.
 6. The disk recording medium according to claim5, wherein said third track includes at least two data index tablescorresponding to said at least two data signal types.
 7. The diskrecording medium according to claim 6, wherein each said programconsists of a sequential combination of the index tables of said atleast two data signal types.
 8. The disk recording medium according toclaim 1, wherein said program area further comprises a fifth track onwhich a warning message is loaded.
 9. The disk recording mediumaccording to claim 8, wherein said warning message adopts a compact diskdigital audio (CDDA) recording format.
 10. The disk recording mediumaccording to claim 1, wherein said table of contents further comprisesdata indicative of a coding method for said data signal.
 11. The diskrecording medium according to claim 2, wherein said still picture datasignal is recorded by a combination of at least one among MODE 1 & MODE2 FORM1 and MODE 2 FORM 2 according to a compact disk interactive (CDI)system.
 12. The disk recording medium according to claim 2, wherein saidstill picture data signal is coded by a delta YUV (DYUV) coding method.13. The disk recording medium according to claim 2, wherein said stillpicture data signal is coded by an RGBnnn coding method where n is aninteger signifying coding bits per color signal component.
 14. The diskrecording medium according to claim 1, wherein said data signal is agraphics data signal coded by a color look-up table coding method. 15.The disk recording medium according to claim 1, wherein said data signalis an animated video data signal coded by a run-length coding method.16. The disk recording medium according to claim 3, wherein said audiodata signal is a musical instrument digital interface (MIDI)data signal.17. A reproduction method for a disk recording medium having a lead-inarea, a program area and a lead-out area, comprising the stepsof:reading a table of contents from the lead-in area of the disk toobtain first and second address information during initial reproduction;reading a data index table and a program index table from a first trackand a second track of the program area according to the first and secondinitial address information, to store the read data and program indextables in a first memory area and a second memory area, respectively;reading a dam index sequence signal of a corresponding program from athird track of the program area according to the index and initialaddress information of a selected program, to store the read data indexsequence signal in a third memory area; sequentially obtaining theinitial address information of the data index from the dam index tablestored in the first memory area according to the data index sequencesignal stored in the third memory area; and reading a corresponding datasignal from a fourth track of the program area according to the initialaddress information of the respective data signals, to process,reproduce and output the read data signal.
 18. A disk recording mediumfor exclusive-use with music video accompaniment comprising a lead-inarea, a program area and a lead-out area, wherein said program areacomprises:a first track for storing an image table on which indexinformation of a plurality of video data constituting respectivebackground pictures of respective song accompaniment programs is loaded;a second track for storing a music image table on which song indexinformation of each song accompaniment program is loaded; a third trackfor storing video data on which the plurality of video data having videoindex information each of which is different from all others, is loaded;and a fourth track for storing music data on which the songaccompaniment programs each having MIDI data, lyrics data and sequencedata of the video data corresponding to respective songs foraccompaniment, and having respective song index information, is loaded,wherein the lead-in area includes a table of contents comprising initialaddress information and a plurality of pointers, each of which isdifferent from all others, and which designates respective tracks in theprogram area and the initial position of the lead-out area.
 19. The diskrecording medium according to claim 18, wherein the units representingsaid plurality of video data are pages.
 20. The disk recording mediumaccording to claim 19, wherein said background pictures of said songaccompaniment programs are constituted by video index sequence dataaccording to a combination of said video data.
 21. The disk recordingmedium according to claim 20, wherein said combination of said videodata corresponds to mood of the corresponding song and lyrics.
 22. Thedisk recording medium according to claim 19, wherein each of saidbackground pictures is changed in accordance with a synchronizing unitof a respective one of said song accompaniment programs.
 23. The diskrecording medium according to claim 19, wherein each of said backgroundpictures is changed in time with one musical bar of a respective one ofsong accompaniment programs.
 24. The disk recording medium according toclaim 18, wherein each of said plurality of video data is recorded by aMODE2 FORM2 method of a CDI system.
 25. The disk recording mediumaccording to claim 18, wherein each said song accompaniment program isrecorded by MODE1 FORM1 or MODE2 FORM1 of a CDI system.
 26. The diskrecording medium according to claim 18, wherein each of said pluralityof video data is recorded by one coding method selected from the groupconsisting of a DYUV coding method, an RGBnnn (where n is the number ofcoding bits per color signal) coding method, a color look-up tablecoding method or a run-length coding method.
 27. The disk recordingmedium according to claim 18, wherein said lyrics data and video data ofeach said song accompaniment program is previously constituted as a dataformat.
 28. The disk recording medium according to claim 18, whereinsaid song accompaniment MIDI data includes a timing code forsynchronizing the lyrics and video outputs.
 29. The disk recordingmedium according to claim 18, wherein said program area furthercomprises a fifth track on which a message recorded by a CDDA method isloaded, following said fourth track.
 30. The disk recording mediumaccording to claim 29, wherein said fifth track includes graphical datafor use with a reproducible message by a compact disk graphics (CDG)method in a graphic sub-code channel.
 31. A reproduction method for adisk recording medium for exclusive-use with music video accompanimenthaving a lead-in area, a program area and a lead-out area, comprisingthe steps of:reading a table of contents from the lead-in area of thedisk recording medium to obtain first and second address informationduring initial reproduction; reading an image table and a music tablefrom a first track and a second track of the program area according tothe first and second initial address information, for storing the readimage and music tables in a first memory area and a second memory area,respectively; obtaining address information of the selected songaccompaniment program with reference to the music table of the secondmemory area according to selection of a song accompaniment program, andreading corresponding song accompaniment program data from a fourthtrack of the disk recording medium according to the obtained addressinformation for storing respective read data in a third memory area; andsequentially reading corresponding video data from a third track of thedisk recording medium with reference to a video data sequence tableamong the song accompaniment program data stored in the third memoryarea, restoring the MIDI data read from the third memory area into anaudio signal to output the restored audio signal, and simultaneouslymixing the read video data with the lyrics data read from the thirdmemory area to display the mixed data as a video signal on a display.32. The reproduction method for a disk recording medium forexclusive-use with music video accompaniment according to claim 31,wherein said video data is previously read in correspondence with anaudio output, and then is output in synchronization with saidcorresponding audio output.